Valve-grinder.



N. E. MEREDITH.

VALVE GRINDER. APPLICATION FILED MAR. 11, 1914.

1,104,210, Patented July 21, 1914.

UNITED STATES IJATENT OFFICE.

NOAH E. MEREDITH, OF LOS ANGELES, CALIFORNIA, ASSIGNOB OF FOBTY-NINE ONE- HUNDREDTHS T6 JOHN Fr WALSH, OF CALIFORNIA.

VALVE-GRINDER;

Specification Letters Patent.

Patented-July 21, 1914.

Application filed March 17, 1914-. Serial No. 8%,28

To all whom it may concern Be it known that I, NOAH E. MEREDITH,

of the valve by a reciprocating elementwhich is manually moved along a shank, the action bein such that during the down stroke of said element the shank is given a succession of oscillations which at the end of the stroke have resulted in turning the shank through a complete revolution and during the return stroke of the operating element the shank is turned by a succession of oscillatory movements with a general progression in the opposite direction, so that at the conclusion of the stroke the shank Will-have been turned backward a complete revolution.

Referring to the drawings: Figure 1. is a side elevation of the tool. Fig. 2 is a view looking at the lower end of the tool. Fig. 3 is an enlarged cross section on line w -m Fig. 1. Figs. 4 and 5 are another form of valve key.

ter pin 4 and adapted to engage the slottedhead of the valve not shown, the pivotal mounting of the blade 3 enabling it to remain seated in the slot of the valve without being dislodged if the shank is not held exactly in line. The shank is provided with a wavy groove 5, having a general longitudinal direction and with a progressive general spiral direction, thus starting at the top of the shank as shown in Fig. 1, the Wavv groove 5 has a gradual progressive positioii toward the left and the lower end thereof is onthe same side from which the groove Starts at thetop. There is thus a general spiral forward directiomof the-groove with intermediate recessionsa citizen of the United States, residing at f vSliclable 1on :the'shank 1 is an operating member the form of a sleeve 6, which is preferably gnarled ashown; to give alieand as the sleeve is moved down the shank is given a succession of Oscillations giving a gradual progression of the hank circularly counter-clockwise an s1 ch that durlng the complete down stake of the sleeve the shank will have been turned back and forth several times and yet moved substantially a complete revolution. During the lip-stroke of the sleeve 6 the shank is caused to turn a complete revolution in the opposite direction by a series of oscillations. Thus by reciprocating the sleeve'the shank is alternately driven in opposite directions by a succession of oscillatory movements, with the result that a corresponding movement is imparted to the valve which properly grinds the same. The progressive circular movement of the shank is an importantfeature because each oscillation of the 7 Valve is caused to overlap the other which obviates scoring. A spring 9 is fixed in groove 10 on the sleeve 6 to prevent screw plug 8 from slipping.

In the form of blade shown in Fig. 4, the blade member 3 is provided with two pro jections 11 for engaging with the valve, while in the form shown in Fig. 5, the blade member 3 is narrower than the blade 3, and is provided with two projections 11 for engaging with the valve. Either blade 3 or 3" may be connected in the shank 1 in place of the blade 3. A

What I claim is: v

1. A valve grinder comprising a shank with a spiral groove therein said groove having a plurality of waves and a sleeve slidable along said shank with means engaging said groove to oscillate the shank as the and a sleeve slidable on-the shank with means engaging in said groove.

.3. A valve grinder comprising a shank adapted to engage the valve, said shank having a spiral wavy groove, a sleeve sliding on the shank, and a ball retained in said sleeve engaging in said groove.

4. A valve grinder comprising a shank with a spiral wa groove, a sleeve slidable on said shank, a all within said sleeve engaging said groove, and a screw plug in the sleeve retaining said ball in engagement with the groove.

5'. A valve grinder comprising a shank with a spiral groove therein said groove having a plurality of waves, a sleeve slidable along said shank with means engaging said groove to oscillate the shank as the sleeve is reciprocated, and a hand knob swiveled on the upper end of said shank.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 9th day of March, 1914.

NOAH E. MEREDITH.

In presence of-4 LORRAIN E. DURRow, Lona M. Bowl-ms; 

